1/*
2 * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15import { Constants } from '../model/common/Constants';
16
17import { Log } from './Log';
18
19const TAG: string = 'common_StringUtil';
20
21export class StringUtil {
22  public static formatString(str: string, ...val: any[]): string {
23    if (str == null) {
24      Log.error(TAG, 'formatString input is null!')
25      return '';
26    }
27    let result = str;
28    for (let index = 0; index < val.length; index++) {
29      while (result.indexOf(`{${index}}`) != -1) {
30        result = result.replace(`{${index}}`, val[index]);
31      }
32    }
33    return result;
34  }
35
36  public static formatStringForNumber(str: string, ...val: any[]): string {
37    if (str == null) {
38      Log.error(TAG, 'formatStringForNumber input is null!');
39      return '';
40    }
41    let result = str;
42    for (let index = 0; index < val.length; index++) {
43      while (result.indexOf('%d') != -1) {
44        result = result.replace('%d', val[index]);
45      }
46    }
47    return result;
48  }
49
50  public static connectString(strList: string[], connector: string): string {
51    if (strList == null || strList.length <= 0 || connector == null) {
52      Log.error(TAG, 'connectString input is invalid!');
53      return '';
54    }
55    let result = '';
56    for (let i = 0; i < strList.length; i++) {
57      if (strList[i] != '') {
58        result = result + strList[i].trim() + connector;
59      }
60      Log.info(TAG, `connectString: ${i}  + ${result}`);
61    }
62    return result.substr(0, (result.length - connector.length));
63  }
64
65  static getIdFromUri(uri: string): number {
66    let srcIndex = uri.lastIndexOf('/');
67    let srcEnd = uri.length;
68    let srcId = uri.substring(srcIndex + 1, srcEnd);
69    let fileId = new Number(srcId);
70    Log.info(TAG, `getIdByUri fileId: ${fileId}`);
71    return fileId.valueOf();
72  }
73
74  /**
75   * Arraybuffer序列化，String.fromCharCode.apply采用UTF-16编码，需要在Uint16Array视图下进行
76   * @param buffer
77   */
78  static arraybufferSerialize(buffer: ArrayBuffer): string {
79    let serializedBuffer: string = String.fromCharCode.apply(null, new Uint16Array(buffer));
80    return serializedBuffer;
81  }
82
83  /**
84   * 基于UTF-16进行Arraybuffer反序列化，每2个字节为单位进行转换
85   * @param serializedBuffer
86   */
87  static arraybufferDeserialize(serializedBuffer: string): ArrayBuffer {
88    let resultBuffer: ArrayBuffer = new ArrayBuffer(serializedBuffer.length * Constants.NUMBER_2);
89    let bufferView = new Uint16Array(resultBuffer);
90    for (let i = 0, strLen = serializedBuffer.length; i < strLen; i++) {
91      bufferView[i] = serializedBuffer.charCodeAt(i);
92    }
93    return resultBuffer;
94  }
95
96  static checkNameInvalid(inputName: string): boolean {
97    return Constants.NAME_PATTERN.test(inputName);
98  }
99
100  static isEmpty(value: string): boolean {
101    return value === undefined || value === '' || value === null;
102  }
103}